truck loader excavating gravel and construction aggregates. construction site with dumper truck and materials

activity aggregate background backhoe bricklayer building built bulldozer cement concrete construction contractor crushed development digging dirt dump dumper dumptruck dust duty earthmoving equipment excavator foundation geology grain granite gravel gray ground heap heavy house hydraulic industrial industry job load loader machine machinery material mineral mound mover pebble pile power quarry road rock rough sand shovel site soil stack stone stones structure truck unloading vehicle wheel work worker working